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15 Cards in this Set
- Front
- Back
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What are chemical bonds?
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links between two or more atoms that hold the atoms together
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What is a chemical formula?
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symbols that show the elements in a compound and their ratios
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What is a chemical name?
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name of a compound that indicates the elements in it
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What are covalent compounds?
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compounds, such as water, in which two atoms share a pair of electrons
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What does endothermic mean?
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characterized by an overall absorption of energy; used to describe a chemical reaction
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What does exothermic mean?
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characterized by a release of heat, light and sound through electrical or other means; used to describe a chemical reaction
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What is are ionic compounds?
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compounds, such as table salt, in which oppositely charged ions come together because of mutual attraction
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What is an ionic lattice?
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repeating pattern of positive and negative ions forming and ionic compound
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What is a molecule?
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a group of atoms in which the atoms are bound together by the sharing of one or more pairs of electrons
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What are multivalent metals?
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metals that can form an ion in more than one way, resulting in ions with different charges
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What is a polyatomic ion?
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a molecular ion composed of more than one type of atom joined together by covalent bonds
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What are products?
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new substances formed in a chemical reaction
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What are reactants?
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substances that react in chemical reactions
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What are roman numerals?
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numerals based on those used by ancient Romans
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What is the law of conservation of mass?
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states that the total mass of the the reactants in a chemical reaction is equal to the total mass of the products
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